Security was beefed up at important government offices and vital installations, while the Assam Rifles Ground, where the main function would be held, was swept by bomb disposal squad, district SP Lalhuliana Fanai said.
Deputy Inspector General of Police (Range) L T Hrangchal said that though there was no specific threat report, all district SPs were instructed to step up vigil.
"We also instructed policemen deployed in border areas to intensify patrol in sensitive areas," Hrangchal said.
